2results about How to "White appearance" patented technology

A method for preparing a special metal abrasive for aluminum products belongs to the technical field of metal abrasive production. The method comprises the following steps: (1) deoxidizing the molten steel with aluminum, and then centrifugally granulating the molten steel to obtain a semi-finished metal abrasive; (2) drying, tempering, cooling, strengthening, and screening the semi-finished metal abrasive to obtain a special metal abrasive for aluminum products; wherein the cooling is performed by air cooling using an air separation device. The special metal abrasive for aluminum products of the present invention has a low oxide scale content, a bright white and uniform appearance, and a long service life.

This invention relates to the field of preparation technology of terephthalic acid dicamphor sulfonate organic amine salt, and particularly to a method for synthesizing terephthalic acid dicamphor sulfonate organic amine salt, comprising the following steps: neutralizing camphor sulfonic acid with an organic amine compound in a solvent to generate camphor sulfonate organic amine salt; and condensing camphor sulfonate organic amine salt with terephthalaldehyde under the catalysis of a non-metallic organic alkaline catalyst to obtain terephthalic acid dicamphor sulfonate organic amine salt. The method employs an organic amine neutralization and non-metallic organic alkaline catalytic system, avoiding the introduction of metal ions throughout the process. The product is terephthalic acid dicamphor sulfonate organic amine salt, and no subsequent ion exchange treatment is required, resulting in higher product safety, making it particularly suitable for high-end applications such as sunscreen cosmetics.